Slide support



INVENTOR.

April 29, 192 1.

1 A. c. LINDHOLM SLIDE SUPPORT Filed Dec. 27 1922 ATTORNEY.

Fetented Ar. 2, 1924.

anon c. Lmnnorin, or srnrno'rrnnnjnassacnnsnrrrs.

SLIDE snrronir.

Application flled'tlecember 27; 1922. erialiidtflfifififi. i

To all whom it may concern;

Be it known that. I, ARTHUR G. LINDHOLM, a citizen of the United States of America,

and a resident of Springfield, in the county.

of Hampden and State of Massachusetts, have invented a new and useful Slide Support, of which the following is a specification.

My invention relates to improvements in means for carrying and guiding slides upon which are mounted work-or tool-holding chucks, or other more or less similar ele ments, of grinding machines and the like, and consists essentially of parallel rods supported on or in the bed of the machine, a slide having .lugs mounted on said rods and supporting the slide above the top of said bed, adjustable friction means between said slide and-rods, and actuating means for said slide, together with such other parts and members as may be necessary or desirable in order to render the-device complete in every respect, all as hereinafter set forth.

The primary object of my invention is to produce a slide support, of the character described above, which, not only is comparatively simple and inexpensive in construction, and stron and durable, but holds and guides the sli e with great accuracy, the latter being a very important factor in the type of machine for which this slide support is adapted, inasmuch as lost motion in such a slide is often fatal to the successful operation of the machine.

Another object is to provide the slide support with adequate means for taking up wear and thus keeping the reciprocable members tight or maintaining the proper sliding fit, and also for producing the desired degree of. tension on the moving parts, whereby is facilitated at all times the act of setting of the slide by means of the hand screw.v

My slide portable grinders or grinding machines for automobile repairowork, although the same is by no means limited to such machines.

Other objects and advantages will appear in the. course of the following description.

I attain the objects and secure the advantages of my invention by the means illussupport is especially adapted for tratedin the "mfom anym drawings,

Figure 1 ,is altop'planlof a fragmentary portion of the, bed of agrinder, which bed isequipped with a slide support that embodies. a practical form of my invention; Fig. 2, a bottom plan of said slide support and other parts and. members shown in the preceding view; Fig. 3, a transverse, vertical section through the slide support and other. parts and members, taken on lines 3-3, looking inthe direction of the associated arrow, in Fi 4; Fig. 4, acentral,

vertical, longitudina, section through said slide support and partsand members, and, Fig. ,5, a sectional detail illustrating one of the friction devices.

, Similar reference characters designate similar parts throughout the several views. In. the drawings, a fragmentary, corner portion of the bed of a grinder is represented at 1, and a slide, at 2, for the chucksupporting, members of said grinder, said slide being arranged above saidbed, There are openings .e and 5 in the bed 1, which openings are separated by a cross-piece 6 that is an integral part of saidbed. The opening l is in front of the opening 5. The bedl is provided at the forward end with a pair of'bearing lugs 7 and a bearing 8, the latter being between the two bearing lugs. These bearing members open at their front endsthrough the front edge of the bed 1, and at their rear ends into the opening 4. The bed 1 is further provided with apairof bearing lugs 7 behind the first pair. I. The rear bearing lugs 7 open at their front ends into the epeninge, and at their rear ends through a depending part of the bed,. as indicated by dotted lines in Figs. 2 ands. iThe axis or each rear bearing lug 7 is in, the same straight, horizontal line with the axis ofithe corresponding front bearing lug 7. I

A horizontal, actuating screw 9 extends through the bearing 8 and through a hearing provided for the same in the cross-piece 6. A hand-wheel 10 is secured to the front, protruding terminal of the screw 9,the hub of which wheel bears against the front edge of the bed 1. On the rear, protruding terminal of the screw 9,'behind the cross-piece 6,

is a washer 11 and a nut 12. Thusthe screw '9 held against longitudinal movementin its bearings by the hub of the hand-wheel andthe'wash'er 11 and nut 12. 1 1

Two 'parallehflhorizontal, supporting and guiderods 13 are arranged in the bearing lugs 7. The rods13 maybe secured in their 7 bearing lugs withadriving fit.

On the under side of the slide 2 are along, transverse lug 14 and a pair of short lugs 15, the former being in front of the cross-piece 6 in the opening 4, and the latter behind said cross-piece in "the opening 5. These lugs are so positioned beneath the slide 2 as to permit said slide to be moved lengthwise to the requiredexten't before said lugs contact with the front and rear boundaries of the openings 4' and 5. The lug'14 isbored to receive the rods 13, and so, also, are the lugs 15, the arrangement of the three" lugs and the four holes "therein necessarily being such that said rodscan pass through the lugs. The 111g '14 is further bored to receive the actuating screw 9,"the passagethrough'said lug for said screw being in the'center of the lug, and

interiorly screw threaded for engagement with the screw." The lugs 14 and 15, when 7 mounted on the rods 13, support the slide 2 above and preferably clear of the upper surfa'ceof the bed 1, and said lugs are adapted to .slide on's'aid rods, the sliding action being produced by turning the hand-wheel 10 and thus revolving the screw 9. When the hand-wheel ,10 is revolved in one direction,

' the' screw 9, which is in threaded engage ment with the lug 14, actuates said lug and with'it the slide 2 forwardly, and when said hand-wheel is rotated in the opposite direction, said screw causes ,saidj lug and slide to be moved rearwardly, the lugs 15 sliding with said first-named lug on the bars 13.

011601 more friction devices, each preferably consisting of ascrew 16 and a bearing *member 17', are provided for the slide 2,

whereby the lugs 14 and 15 are caused to engage the rods 13 with a greater or less degree of tightness or force, and more or less frictional resistance to the movement of said lugs on said rods is produoedsee Fig. 5. Eachscre'w 16 is tapped into a vertical opening-or passage 18 in the slide2, which passage extends downwardly into either the 'bearlng 14 or one of the bearings 15, and is V positioned directly over the rod 13 which extends'through the bearing. Inother words,

the passages open at their lower ends into the'bores for the rods 13 in the bearings 14 and 15. The friction member 17, in each "case, preferably consists of a fiber plug [which is'insert'ed in one of the passages 18 beneath the screw 16 in suchpassage, and

wbetween said screw and :the rod 13 below.

Upon turning down any one of the screws '16'the plug 17 below is forced more tightly against the contiguous rod 13, and so increases the reslstance ufiered to the movement of the lug, in which said screw is located, on said rod; contrariwise, upon turning said screw upwardly,such resistance is decreased. In addition to thevariable frictional resistance afforded by the screws 16 and the plugs. 17 ,said screws and plugs are useful in taking up any wear that may result from the action of the lugs 14 and 15 on the rods 13, and to maintain the requisite tight fit between saidlugs'and rods.

The detailed functions of the'slide 2 are not important, so far as the present invention is concerned, hence will not be explained, and the operation 1 of -said slide, through the medium of the screw 9, will'be clearly understood from the fo'regoingdescription.

T'he'rods 3,-when properly arrangedand secured in place beneath or within the bed-1, provide combined "supports and guides for the slide 2,'through the medium of the lugs 14 and 15 which are'integra'l with saidslide,

which are of-such a nature that said slide is supported and guided with the utmost accuracy and without liability of being impaired so far as the supporting andgui ding means therefor are concerned. The rods 13 and the lugs 14 and 15 securelyholdthe slide 2* against movement in any, direction except longitudinally ofsaid rods.

Generally the screws 16 are turned-down .sufiiciently to produce a slightly appreciable resistance, over and above that which would naturally be present, to the action or thrust in either direction of the screw 9.

More or less change in the shape, size, construction, and arrangement of some or all of the parts of this slide may be made, without departing from thespirit of my'invention, or exceeding thescope of what is claimed.

' What I claim'as my invention, and'desire and further provided with adjustable engaging means for one of said rods, whereby with a bed provided with bearing lugs, and V rods, secured in said bearing lugs, of a slide provided with lugs mounted on said rods,

the resistance to the'movement of saidislide on such rod may be increased or decreased.

3; The combination, in a slide support,

with a bed provided with bearing lugs, and rods secured in said bearing lugs, of a slide vided with lugs adapted to be mounted on said rods and for threaded engagement with said screw, said slide and its lugs having '15 passages tapped therein to open onto said rods, screws in said passages, and plugs n said passages between said screws and said rods.

ARTHUR C. LINDHOLM.

Witnesses:

R. E. ALLBEE, F. A. CUTTER. 

